Browsing by Author "San Andrés, Luis"
Now showing items 1-20 of 21
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Wu, Tingcheng (2019-09-06)Bulk-flow predictive models (BFM), though simple and fast, often fail to accurately predict the performance of gas labyrinth seals (LSs). In this work, a Computational Fluid Dynamics (CFD) analysis quantifies the effects ...
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Lu, Xueliang (2020-05-14)In the subsea oil and gas industry, multiphase pumps and wet gas compressors are preferred technologies as they eliminate a conventional liquid-gas separation station to save up to 30% of capital investment. Seals in ...
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Liu, Zhongzheng (2016-08-09)Microfluidic acoustophoresis is a nonlinear acoustic phenomenon that can induce the motion of microparticles or cells under acoustic excitations in microfluidic devices. Existing acoustophoresis models, which are derived ...
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Miao, Guanxiong (2022-06-24)Powder spreading is a critical step of binder jetting additive manufacturing and has a determinative effect on the quality of the final product. The objective of this research is to improve the fundamental knowledge of ...
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Characterization of Wear and Dynamic Performance of Interstage Seals for Electric Submersible Pumps Hure, Robert Byrd (2019-02-22)Electric Submersible Pumps (ESPs) increase head of process fluid in oil production from within the well. An ESP comprises of a pump, seal, and motor section oriented vertically. The pump section includes multiple centrifugal ...
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Abdollahi, Behzad (2017-11-29)Analysis of tilting pad journal bearings (TPJBs) has reached great complexity as 3D computational fluid dynamics models are coupled to finite element structural models for the pads, journal and bearing housing and account ...
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Ryu, Keun (2012-02-14)Gas foil bearings (GFBs) operating at high temperature rely on thermal management procedures that supply needed cooling flow streams to keep the bearing and rotor from overheating. Poor thermal management not only makes ...
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San Andrés, Luis; Jani, Hardik; Kaizar, Hussain; Thorat, Manish (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)Rotating machinery relies on engineered tilting-pad journal bearings (TPJB) to provide static load support with minimal drag power losses, relatively low pad temperatures, and ensuring a rotor dynamic stable operation. End ...
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San Andrés, Luis; Alcantar, Andy (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)The lecture presents measurements of the static and dynamic load performance conducted with a tilting pad journal bearing running under flooded and evacuated conditions and lubricated with flow rates ranging from a nominal ...
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Khatri, Rasish (2014-08-07)Static and dynamic performance test results are provided for a horizontal-application three-lobe bearing evaluated over the following range of static-load orientations (all taken from the leading edge of the loaded pad): ...
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San Andrés, Luis; Lubell, Daniel (Texas A&M University. Turbomachinery Laboratories, 2014)Gas bearings (GBs) are an efficient alternative for load support of high speed microturbomachinery (< 400 kW, +1000°F, +3M DN). These bearings are compliant surface hydrodynamic bearings using ambient air as the working ...
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Ashton, Zachary (2010-01-14)Adequate sealing in turbomachinery reduces secondary leakage and results in more efficient and stable systems. Labyrinth seals are most common, although brush seals are popular in specialized applications. The Hybrid Brush ...
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Seshagiri, Sanjeev (2012-07-16)Squeeze Film Dampers (SFD) provide viscous damping in rotor bearing systems to reduce lateral vibration amplitudes and to isolate mechanical components. Aircraft engine shafts, often supported on roller bearings, operate ...
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Toner, Jonathan J (2021-01-25)This thesis examines the change in performance of a tilt pad journal bearing due to variation in lubricant flow ranging from 150% to 25% (and below) of a theoretical value. The test bearing is a four-pad, 101.6mm (4 inch) ...
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Chirathadam, Thomas A. (2010-07-14)Metal mesh foil bearings (MMFBs) are a promising low cost gas bearing technology for support of high speed oil-free microturbomachinery. Elimination of complex oil lubrication and sealing system by installing MMFBs in oil ...
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Tang, Jin (2021-07-29)In multistage hydraulic fracturing treatments, the combination of extreme large-scale pumping (high rate and volume) and the high heterogeneity of the formation (because of large contact area) normally results in complex ...
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Jeung, Sung Hwa (2013-08-22)Squeeze Film Dampers (SFDs) aid to suppress rotor vibrations and enhance the stability of high-speed rotor-bearing systems. A SFD is a simple oil lubricated film between a stationary housing and a precessing (whirling) ...
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Porter, Quinton James (2022-08-17)Powder bed fusion (PBF) and binder jetting (BJ) are two closely aligned processes that belong to powder-bed additive manufacturing (PBAM). The research shared in this dissertation presents technical advancements surrounding ...
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San Andrés, Luis; Jeung, Sung-Hwa; Den, Sean; Savela, Gregory (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)Squeeze Film Dampers (SFDs) are effective means to ameliorate rotor vibration amplitudes and to suppress instabilities in rotor-bearing systems. A SFD is not an off-the-shelf mechanical element but tailored to a particular ...
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San Andrés, Luis; Jeung, Sung-hwa; Den, Sean; Savela, Gregory (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)Lecture 15: Squeeze Film Dampers (SFDs) are effective means to ameliorate rotor vibration amplitudes and to suppress instabilities in rotor-bearing systems. A SFD is not an off-the-shelf mechanical element but tailored to ...